ROTATIONAL MOTION

What is the main purpose of using a lever?

• To reduce distance
• To increase weight
• To measure force
• To amplify force

In the equation R - F1 - F2 = 0, what does R represent?

• Resultant moment
• Rotational force
• Resistance
• Reaction force at the fulcrum

What determines the direction of rotation in a lever?

• Color of the lever
• Temperature
• Material of the fulcrum
• Relative magnitude of clockwise and anticlockwise moments

If F is the force and L is the length of the arm, what is the moment?

• F + L
• F - L
• F / L
• F × L

What is the vector nature of the moment of a couple?

• Fixed vector
• Sliding vector
• Zero vector
• It is a free vector